Fixed up some flake8 errors from the latest version
diff --git a/src/OpenSSL/tsafe.py b/src/OpenSSL/tsafe.py
index ba17d73..1cc0d2b 100644
--- a/src/OpenSSL/tsafe.py
+++ b/src/OpenSSL/tsafe.py
@@ -1,10 +1,6 @@
-from OpenSSL import SSL
-_ssl = SSL
-del SSL
+from threading import RLock as _RLock
 
-import threading
-_RLock = threading.RLock
-del threading
+from OpenSSL import SSL as _ssl
 
 
 class Connection: